<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input type="text" id="txt">
    <script>
        var txt = document.getElementById("txt");
        var arr = [
                        {name:"你是谁,他在那里",id:1102},
                        {name:"圈住你在那里",id:1102},
                        {name:"hello在那里",id:1102},
                        {name:"怪你",id:1102},
                        {name:"world",id:1102},
                    ];
                    txt.onkeydown = function(event){
                        if(event.keyCode ==13){
                            var value = this.value;
                            if(value){
                                var res=arr.filter(item=>{
                                    return item.name.includes(value)
                                })
                                res.map(item=>{
                                    if(item.name.length>3){
                                        return item.name = item.name.slice(0,3)+"..."
                                    }
                                })
                            }
                            console.log(res)
                        }
                    }
    </script>
</body>
</html>